/*
//计算矩形面积

public class ears {

    double length;
    double wide;

    public ears(double length,double wide){
        this.length = length;
        this.wide = wide;
    }

    public void value(){
        System.out.println("矩形的面积："+(length*wide));
    }

    public static void main(String[] args){
        ears seeking_value = new ears(23,45);
        seeking_value.value();
    }
}
 */
